Rotary cutting pick
AssigneeSandvik Intellectual Property AB
InventorsSteven Lee Weaver, Matthew Kenny
Life of this patent
Estimating the term…
Abstract
A cutting pick comprising an elongate shank and a cutting tip which is mounted to one end of the shank to project from that end. At least two sleeve segments are provided and those segments are circumferentially fixed about the shank to form a substantially annular sleeve. The sleeve can be fixed about the shank in non-contacting relationship with the trailing end of the cutting tip. Moreover, the cutting tip can have a portion of maximum diameter which is of greater diameter than the inner diameter of the sleeve so that the portion of maximum diameter overlies the sleeve radially.
Claims33
A cutting pick comprising:
- an elongate shank;
- a cutting tip mounted to one end of the shank to project from that end;
- and
- at least two sleeve segments which are circumferentially fixed about the shank to form a substantially annular sleeve having leading and trailing ends.
A cutting pick comprising:
- an elongate shank;
- a cutting tip mounted to one end of the shank to project from that end;
- the cutting tip having a leading end, a trailing end and a mounting portion for mounting to the shank, the mounting portion and the leading end being disposed on opposite sides of the trailing end, the tip having a shape such that it diverges outwardly in a direction from the leading end to the trailing end to a portion of maximum diameter;
- and
- at least two sleeve segments which are fixed about the shank to form a substantially annular sleeve having an inner diameter and leading and trailing ends, the sleeve being fixed about the shank adjacent to and in non-contacting relationship with the trailing end of the cutting tip,
- wherein the portion of maximum diameter of the cutting tip is of greater diameter than the diameter of the inner diameter of the sleeve so that the portion of maximum diameter overlies the sleeve radially.
A method of mining with a cutting pick, the method comprising the step of:
- mining in gas and/or mine dust containing environments,
- wherein the cutting pick is attached to a mining machine and
- wherein the cutting pick comprises:
- an elongate shank;
- a cutting tip mounted to one end of the shank to project from that end, the cutting tip having a leading end, a trailing end and a mounting portion for mounting to the shank, the mounting portion and the leading end being disposed on opposite sides of the trailing end, the tip having a shape such that it diverges outwardly in a direction from the leading end to the trailing end to a portion of maximum diameter;
- and
- at least two sleeve segments which are fixed about the shank to form a substantially annular sleeve having an inner diameter and leading and trailing ends, the sleeve being fixed about the shank adjacent to and in non-contacting relationship with the trailing end of the cutting tip,
- wherein the portion of maximum diameter of the cutting tip is of greater diameter than the diameter of the inner diameter of the sleeve so that the portion of maximum diameter overlies the sleeve radially.
Dependencies are inferred from the claim text.